Journal
FOOD AND AGRICULTURAL IMMUNOLOGY
Volume 28, Issue 6, Pages 1315-1329Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09540105.2017.1339668
Keywords
Cupreous N-carbamylglutamate chelate; copper source; growth performance; fecal copper excretion; weaning piglets
Funding
- National Natural Science Foundation of China [31402088]
- Department of Science & Technology of Hunan Province [2015 NK1002]
- ISA, CAS [2017QNCXTD_TBE]
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This experiment was conducted to measure the effects of dietary supplementation with copper sulfate and cupreous N-carbamylglutamate chelate (NCG-Cu) on the growth performance, serum biochemical profile and immune response, tissue mineral levels and fecal excretion of minerals of weaning piglets. Eighteen 28-d-old healthy weaning piglets (initial body weight = 6.34 +/- 0.10 kg) were individually housed and randomly assigned to receive one of three diets containing no copper in either form (Control), 650 g/t copper sulfate (650 g/t Cu group) or 640 g/t NCG-Cu (640 g/t NCG-Cu group) in the final feed for 14 days. These data indicate that 640 g/t NCG-Cu was as effective as 650 g/t Cu for stimulating growth, immune response, and improving F/G in weaning piglets. Fecal Cu excretion decreased in piglets from the 640 g/t NCG-Cu group, which received 160 mg/kg Cu compared with the fecal CU excretion observed in the piglets from the 650 g/t Cu group, which also received 160 mg/kg Cu. Therefore, 640 g/t NCG-Cu of dietary Cu, may provide an effective environmental alternative to 650 g/t Cu in weaning piglets.
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